The Clean Energy Ministreal which consists of governmental agencies of 23 countries like America announced that as of the end of 2014， a total of 0.66 million pure EVs have been sold worldwide. American accounts for 39 % of the share out of the total supplies, followed by Japan (16%) and China (12%)
American, whose EV supply takes the lead, has launched the world’s first movable solar carport system. Google has started to use it.
EV doesn’t need to use gasoline. As a new generation of environment-friendly car, it doesn’t discharge carbon dioxide when you are driving. Governmental agencies push ahead with its popularization and expansion. Even though EV has been popularized, but if the power is produced by which the thermal power station makes use of fossil fuels like coal and oil to generate power, it doesn’t totally belong to ‘CO2 zero emission’ although it is clean when being driven. Because thermal power will discharge a large amount of CO2 and accelerate the globe worming.
In order to solve these problems, Envision Solar Corporation whose base is in San Diego, California develops the world’s first ‘moveable solar carport system’. Its name is “EVARC（Electric Vehicle Autonomous Renewable Charger）(Fig.1).
The EVARC is 4.88 m in length, 2.74 in width. It can be put properly in the parking space where a car can be parked originally. This dependent solar carport is equipped with solar cell of 2.5 Kw or 3.3 Kw. Its annual power generation is 3800～7000kWh. The reason why it can realize such a large amount of power generation is that the company has specific tracing system. Moreover, the system is equipped with the battery of 21.6kWh.
The EVARC consists of one quick charger and two common chargers. A typical EV can be fully charged during your meal, meeting or shopping. If the EV is small-sized and suitable to be driven in the downtown area, many EVs can be charged at the same time and each EV’s electricity can reach to around 25%.
When you use previous charging pile which is connected to the electric power system to charge the EV, its power source contains a high percentage of thermal power by using fossil fuels. But if you use EVARC to charge the EV, the energy it uses is 100% renewable energy. It is clean and discharges zero CO2 .
Finish setting up the charging pile within 5 minutes
‘In the past, it took a long time to set up the charging pile without exception. The construction was harder than I had expected because you needed to apply for the examination and approval first, make sure the space you set, lay the foundation by civil construction, lay cables, update switching devices，transformers and the circuit and so on when the power supply equipment was imported in the place where you set up the charging pile. Besides these electricity-related jobs, you needed to carry out the environmental impact assessment, etc. There was plenty of work to be done.’ said the company’s CEO Desmond Wheatley, ‘these are also major obstacles to setting up charging piles smoothly.’
Wheatley added,’ if you use Envision Solar’s EVARC, you will not be affected by those kinds of stuff. You don’t need to carry out the civil construction such as laying the foundation and cables, etc. You don’t need to update the transformer and switching device as well. Moreover, the size of a ARC is the same as a parking space so setting up the charging pile will not reduce the precious parking spaces.’
EVARC can be shipped to the destination by the ARC Mobility, which is equipped with hydraulic press control function and similar to the trailer that can tow boats. It is set up in the designated parking lot. No other special tools are required. After it is shipped to the parking lot, it only takes 5 minutes to finish setting up the charging piles.(Fig 2)
Fig2: a moving EVAR towed by a ARC Mobility ( A tow truck) (photographed by Envision Solar)
The paradigm shift of EV charging piles
It has other advantages if the charging pile doesn’t need to connect to the electric power system. Wheatley said that many clients (including enterprises and governmental agencies) don’t know about the professional knowledge and the perfect location when setting up the charging piles. The main reason is that the EV market has not yet ripe and few data has been accumulated about places requiring high demands for chargers.
If you have invested a large amount of money in setting up charging piles, but you don’t use them even one time. Previous charging piles (which are connected to the electric power system and built on the earth) can’t be moved to other places easily, but EVARC can be moved within several minutes. In addition, when your company needs to relocate or whatever, the EVARC can be moved to the new place easily as well. (Fig 3)
Nowadays, Envision Solar and Charge Across Town are collecting the data about the charging service condition of EVs in public areas in San Francisco. The collected data items include as follows: how many EVs will be charged in one charging station within 3 months, how long will they be charged and how many kWh will be used. Moreover, they will also investigate whether solar charging piles are more popular than charging piles that are connected to the electric power system besides the solar power generation and the battery’s charging capacity. It will be shipped to other places for further data collection 3 months after they finish collecting the data.
Wheatley said, ’EVARC makes the impossible possible. It can be set up on places where cables can’t be laid originally. In the past, you would say that ‘if I have had an EV charger’ while you will say ‘there should be one’ in the near future.
Finally, Wheatley emphasized the meaning of the new business like this, ‘we realize EVs’ power driving only by solar power generation. It only takes several minutes to set up the charging piles rather than several months. This is the paradigm shift of charging piles ’